A researcher conducts a quasi-experimental study to determine whether there is improved weight gain among premature infants who are fed according to cue-based protocols.
The researcher trained neonatal intensive care nurses to apply cue-based feeding to orally fed infants and notes a statistical difference in weight gain between infants fed according to cue-based protocols and those fed according to standard protocols. Which might be a threat to internal validity in this study?
a. The concept of cue-based feeding is not well defined.
b. The study sample is homogeneous.
c. Some infants developed gastroenteritis.
d. Not all nurses received cue-based protocol education.
Question 2
A researcher conducts a quasi-experimental study to determine whether there is appropriate weight gain among premature infants who are fed according to cue-based protocols.
The researcher trained neonatal intensive care nurses to apply cue-based feeding to orally fed infants and notes a statistical difference in weight gain between infants fed according to cue-based protocols and those fed according to standard protocols. The reviewer critiquing the study notes that not all nurses completed the cue-based feeding module. This would affect which type of validity?
a. Construct validity
b. External validity
c. Internal validity
d. Statistical conclusion validity
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